How would you make an electromagnet? (A) Wrap insulation around a magnetic material, and create an electromagnetic field around the magnet. (B) Cover a magnet with insulation, and apply an alternating electrical current to the magnet. (C) Cover a twisted ferromagnetic material with insulation, and apply a direct current to the coil. (D) Wrap an insulated wire around a metal with ferromagnetic properties, and apply an electric current.

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Gunther

Physics

24 October, 23:48

How would you make an electromagnet? (A) Wrap insulation around a magnetic material, and create an electromagnetic field around the magnet. (B) Cover a magnet with insulation, and apply an alternating electrical current to the magnet. (C) Cover a twisted ferromagnetic material with insulation, and apply a direct current to the coil. (D) Wrap an insulated wire around a metal with ferromagnetic properties, and apply an electric current.

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Powder · Answer 1

Electromagnet is made when we : D) w rap an insulated wire around a metal with ferromagnetic properties, and apply an electric current. E lectromagnets act as magnets only when the current is directed in an insulated wire which is wrapped around a metal with ferromagnetic properties such as iron.